XT-12 Motherboard Settings and Configuration

Processor	8088/V-20
Processor Speed	12MHz
Chip Set	None
Max. Onboard DRAM	1MB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface
NPU Options	8087

CONNECTIONS
Purpose	Location	Purpose	Location
Floppy drive interface	FP1	Speaker	JP4
Turbo LED	JP1	Turbo switch	JP5
Keylock	JP2	Power LED	JP6
Reset switch	JP3

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	JP7	N/A
»	Factory configured - do not alter	JP8	N/A
»	CPU type select Intel 8088	JP11	Closed
	CPU type select NEC V20	JP11	Open

DRAM CONFIGURATION
Size	Location
256KB	(2) 44256 chips in U4 and U5
512KB	(4) 44256 chips in U3 through U6
768KB	(6) 44256 chips in U2 through U7
1MB	(8) 44256 chips in U1 through U8

BIOS CONFIGURATION
Size	JP9A	JP9B
8/16KB	Open	Open
32KB	Closed	Open
64KB	Closed	Closed

FLOPPY DRIVE 0 CONFIGURATION
Size	JP10A	JP10B
360KB 5.25"	Closed	Closed
720KB 3.5	Open	Closed
1.2MB 5.25	Closed	Open
1.44MB 3.5"	Open	Open

FLOPPY DRIVE 1 CONFIGURATION
Size	JP10C	JP10D
360KB 5.25"	Closed	Closed
720KB 3.5	Open	Closed
1.2MB 5.25	Closed	Open
1.44MB 3.5"	Open	Open